Build: More changes as we move to WAF

The only example being built in build_all.sh was CPUInfo and that is
really an APM tool.  It will get built further down in when
autotest.py calls build.Examples so we don't need to build it here.

And changing the Replay build to just call make which really means it
will invoke waf as that's what the makefile does.

Tools/scripts/build_all.sh

@@ -47,19 +47,9 @@ for b in sitl; do
 done
 popd
 
-echo "Testing build of examples"
-
-examples="Tools/CPUInfo"
-for d in $examples; do
-    pushd $d
-    make clean
-    make sitl -j4
-    popd
-done
-
 pushd Tools/Replay
 make clean
-make linux -j4
+make
 popd
 
 test -n "$PX4_ROOT" && test -d "$PX4_ROOT" && {